At the end of this lesson, students will be able to:
- Read and understand given problem situations.
- Make tables and identify patterns.
- Solve real-world problems using selected strategies as part of a plan.
Terms introduced in this lesson:
intensity (loudness) of sound
Teaching Strategies and Tips
Remind students of the four-step problem-solving plan.
In Example 1, students must find the compound interest formula on their own by looking for a pattern. Guide them through the first two years until the pattern becomes evident.
Have students check their answers to the examples presented in this lesson by finding , the growth or decay rate, instead of looking for a pattern. Have them compute . The method was presented in Examples 6 and 7 in lesson Exponential Growth Functions.
Encourage students to construct tables and look for patterns in Review Questions 1-4. Suggest that they only check their work using explicit formulas.
In Review Questions 1-4, remind students to convert the percents to decimals.